Best Cinnamon Bun Cake

Best Cinnamon Bun Cake 3 cups flour 1/4 tsp salt 1 cup sugar 4 tsp baking powder 1 1/2 cup milk 2 eggs 2 tsp vanilla 4 T butter, melted 2 sticks (1 cup) butter, softened 1 cup brown sugar 2 T flour 1 T cinnamon 2/3 cups nuts (optional) Glaze: 2 cups powdered sugar 5 T milk 1 tsp vanilla With an electric mixer or stand-up mixer, mix flour, sugar, salt, baking powder, milk, eggs, and vanilla. Once combined well, slowly stir in 4 T melted butter. Pour batter into a greased 9×13″ baking pan. In a large bowl, mix the 2 sticks of softened butter, brown sugar, flour, cinnamon, and nuts until well combined. Drop evenly over cake batter by the tablespoon and use a knife to marble/swirl through the cake. Bake at 350 degrees for 25-30 minutes or until toothpick comes out nearly clean from center. Place powdered sugar, milk, and vanilla in a large bowl. Whisk until smooth. Drizzle over warm cake. Serve warm (we like it straight out of the oven) or at room temperature.